The 2021 Hyundai Sonata with the 2.5L four-cylinder engine gets 27 MPG combined, a figure typical for the mid-size sedan class. This number should appeal to buyers who want value, space, and modern technology. It isn’t a hybrid designed for maximum efficiency, but it is a comfortable and stylish family car offering a sensible balance of performance and economy.

City and highway performance

The EPA estimates show how the Sonata 2.5L performs in different driving conditions. Its 23 MPG city rating reflects the effect of stop-and-go traffic, where frequent acceleration and braking reduce fuel economy. The 33 MPG highway figure shows the engine’s efficiency at cruising speeds, helped by the smooth-shifting eight-speed automatic transmission (AM-S8). Drivers who spend more time on the open road will likely find their fuel economy closer to 33 MPG than drivers in cities.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Hyundai Sonata 2.5L at $1,600. This is calculated based on 15,000 miles of driving per year, using the national average fuel price. You can use this figure to compare running costs with other vehicles. Keep in mind that individual expenses will vary based on driving habits, local fuel prices, and fuel type.

Real-world expectations

EPA estimates provide a standard to use in your comparisons, but real-world fuel economy will vary. Aggressive acceleration, heavy braking, and carrying heavy cargo reduce fuel economy. Driving gently, anticipating traffic, and maintaining your car will improve your MPG. To set realistic expectations for your Sonata’s fuel consumption, consider how your driving habits compare to the EPA’s testing.

How it compares

The Sonata’s fuel economy compares well with other cars in the mid-size sedan market. The Toyota Camry with its standard 2.5L engine gets about 28 MPG combined, and the Honda Accord 1.5T gets a slightly better 33 MPG combined. The Nissan Altima with its 2.5L engine gets 32 MPG combined. These seemingly small differences can be important to buyers focused on long-term running costs. If you value the Sonata’s styling and features, you might accept a slightly lower MPG than a competitor like the Camry.

Tips to maximize efficiency

The eight-speed automatic transmission in the Sonata helps the engine stay in its most efficient range. Avoid accelerating hard, and let the transmission shift smoothly to improve fuel economy. On the highway, cruise control helps you maintain a consistent speed to minimize fuel consumption.

Keep your Sonata’s tires properly inflated. When tires are underinflated, they increase rolling resistance and force the engine to work harder, which reduces fuel efficiency. You can find the recommended tire pressure on the driver’s side doorjamb or in the owner’s manual. Remember that proper tire inflation also extends tire life.

Weight also reduces fuel economy. Remove any items you don’t need from your vehicle, especially heavy objects in the trunk. More weight requires the engine to work harder and increases fuel consumption. Keep extra weight in mind when loading up for a road trip because it will cause a dip in fuel economy.

Regular maintenance, including oil changes and air filter replacements, is critical for engine performance and fuel efficiency. With a clean air filter, the engine can breathe freely. Fresh oil reduces friction so internal components work smoothly. Skipping maintenance can hurt fuel economy and shorten the lifespan of the powertrain. See SONATA MPG across all years.

If your Sonata has drive modes, learn how to use them. Eco mode prioritizes fuel efficiency by adjusting throttle response and transmission mapping. Using Eco mode for everyday driving can save you gas. See all Hyundai fuel economy data.